If you are having a bad mood day, 15 minutes of exercise will boost your mood and help you keep calm. The reason why exercise is the best mood medicine is that the exercise pumps up the mood regulating anti-depressants presents in your body. While working-out, body temperature increases upto 2ºF because white blood cells release pyrogens and proteins. Warm body is known to increase endorphins in brain circuits regulating your mood. Working-out ceases negative mind games. Working out gives a better control of yourself encouraging better coping mechanism. Try these 15 minutes work-out: